Protect your photos, prints, and artworks from long-term damage with our White Acid-Free Photo Frame Inserts - a simple yet essential addition to any quality framing setup.

These inserts are cut to standard frame sizes and are made from conservation-grade, acid-free matboard. They act as a barrier between your artwork and the backing board, helping to prevent acid migration and the risk of discolouration, yellowing, or brittleness over time.

Many standard backing boards, including MDF, can become acidic as they age. By pairing these inserts with an acid-free mat board, you help shield your image from contact with potentially damaging materials inside the frame.

Ideal for Float Mounting

These inserts can also be used as a clean, acid-free backing mat for float-mounting items inside a frame. Ideal for shadow box frames or 3D displays, they provide a crisp background surface when mounting artwork, documents, or objects directly on top - without using a traditional window mat. This is a popular method for showcasing pressed flowers, certificates, medals, or handwritten letters with depth and dimension.

Key Features of Acid-Free Frame Inserts

Acid-Free & Buffered Core – Made from premium conservation-grade matboard, buffered with calcium carbonate for a higher and stable pH to help neutralise acidity over time.
No Window Opening – Solid, uncut board designed to sit behind your artwork inside the frame.
Protective Backing Layer – Creates a clean, stable surface between your print and the frame backing.
Preservation-Ready – Ideal for use with acid-free matboards to create a full archival framing setup.
Australian Made – Cut and packed in our Sydney workshop using professional equipment and high-grade materials.

Why Use an Acid-Free Insert?

Using an acid-free insert is an easy and affordable way to improve the longevity of any framed image. Pairing one with an acid-free mat board provides full protection - keeping your artwork spaced away from the glass and shielded from acidic materials behind it.

For more on how matboards and frame inserts work together, read our guide: What is a Matboard?

Buy More and Save!

Volume Discounts (automatically applied at checkout):

Buy 5 or more: 10% off
Buy 10 or more: 15% off
Buy 25 or more: 20% off

Also looking for something else?

Matboard Cut-to-Size – Complete your setup with a custom or pre-cut acid-free mat board to border and protect your artwork.
Acid-Free Self-Adhesive Hinging Tape – Secure your artwork with acid-free hinging tape featuring pH-neutral adhesive.
Acid-Free Foam Board – Choose our Cut-to-Size 5mm White Foam Board for supportive, acid-free backing.
Self-Adhesive Foam Board – Explore our Self-Adhesive Foam Board options for quick mounting.
MDF 3mm Backing Cut-to-Size – For structural support, view our Cut-to-Size MDF Backing Boards.
Easel Stand Backs – Display tabletop frames with Easel Stand Backs featuring hinged support legs.
Replacement Glass Perspex – Need replacement glazing? Browse our Cut-to-Size Acrylic Glass Panels.

Blank & Uncut Mat Boards - Acid-Free

Black Acid-Free Mat Board - Blank Full Sheets

Ultimate White Acid-Free Mat Board - Blank Full Sheets

White Acid-Free Frame Insert